Commit 618999026f2b3863ab0a9477b500995c924d28b0
2012-09-21T16:10:34
As we average gpu time over 5 work intervals for dynamic GPU intensity, there is no need to maintain a rolling average and it avoids the potential long term corruption of a single overflow value.
diff --git a/driver-opencl.c b/driver-opencl.c
index ded20c3..82cbc6b 100644
--- a/driver-opencl.c
+++ b/driver-opencl.c
@@ -1585,15 +1585,14 @@ static int64_t opencl_scanhash(struct thr_info *thr, struct work *work,
gpu_us = us_tdiff(&tv_gpuend, &gpu->tv_gpumid);
if (gpu_us > 0 && ++gpu->hit > 4) {
gpu_us = us_tdiff(&tv_gpuend, &gpu->tv_gpustart) / gpu->intervals;
- gpu->gpu_us_average = (gpu->gpu_us_average + gpu_us * 0.63) / 1.63;
/* Try to not let the GPU be out for longer than
* opt_dynamic_interval in ms, but increase
* intensity when the system is idle in dynamic mode */
- if (gpu->gpu_us_average > dynamic_us) {
+ if (gpu_us > dynamic_us) {
if (gpu->intensity > MIN_INTENSITY)
--gpu->intensity;
- } else if (gpu->gpu_us_average < dynamic_us / 2) {
+ } else if (gpu_us < dynamic_us / 2) {
if (gpu->intensity < MAX_INTENSITY)
++gpu->intensity;
}
diff --git a/miner.h b/miner.h
index a234ecd..ed6c67c 100644
--- a/miner.h
+++ b/miner.h
@@ -374,7 +374,6 @@ struct cgpu_info {
#endif
struct timeval tv_gpustart;
struct timeval tv_gpumid;
- double gpu_us_average;
int intervals, hit;
#endif